Water Supply Outlook for Alberta
August 2008
Table 4b Water Supply Forecast as of August 1, 2008 - Bow River Basin
(Natural Flows) |
Volume Forecast for August 1 to September 30, 2008 | Year to date | |||||||
Locations | Volume in dam3 |
Volume as a % of Average |
Probable Range as a % of Average |
Reasonable Minimum as % of Average |
Forecast Ranking (lowest to highest) | Recorded March-July 2008 Volume as a % of Average | Ranking (lowest to highest) | |
Bow River at Banff | 264,000* | 94 | 82-110 | 78 | 35/91 | 84** | 16/91 | |
Lake Minnewanka Inflow | 45,600* | 106 | 88-151 | 79 | 62/91 | 131** | 79/91 | |
Spray River near Banff | 87,600* | 104 | 92-126 | 85 | 55/91 | 104** | 51/91 | |
Kananaskis River | 102,000* | 97 | 89-118 | 84 | 49/91 | 105** | 53/91 | |
Bow River at Calgary | 596,000* | 95 | 81-115 | 76 | 48/91 | 110** | 66/91 | |
Elbow River | 54,600* | 112 | 90-211 | 77 | 72/91 | 147** | 81/91 | |
Highwood River | 85,300* | 98 | 84-133 | 65 | 64/91 | 139** | 74/91 |
*NOTE: The forecast shown is the March to September 2008 forecast minus the recorded volume to date Note: Click on the site Location to see the Water Supply Forecast graphically ** - Recorded 2008 natural volumes are preliminary and subject to change Average is calculated for the period 1912 to 2001 NOTE: There is: a 50% chance that the actual natural flow will fall within the probable range given; a 25% chance that the actual flow will be less than the lower bound of the probable range given; and a 10% chance that the actual natural flow will be less than the reasonable minimum. Actual day to day streamflow conditions may vary throughout the season as a result of the effects of streamflow diversion and reservoir storage. |
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